Identifying the type of child for if statements

programming flash
1

Hi, thanks for taking the time to look at my query:
Essentially I want to know what to replace the **[COLOR=red]1_mc[/COLOR] **with.

 
var various_mc:MovieClip = new 1_mc;
addChild(various_mc);
 
trace(various_mc) //  [object 1_mc]
 
**if(various_mc == [COLOR=red]1_mc)[/COLOR]** // This causes the error. 
{
   removeChild(various_mc);
   various_mc = new 2_mc;
   addChild(various_mc);
}

The if statement runs on the click of a button. I want it so that if 1_mc is on stage, its removed and 2_mc is placed on the stage. At the moment I am doing this by placing them into a sprite and using it like a loader… but I thought maybe this would be a more efficient method.

Thanks!